Fountain stencil brush



June 27, 1939. .M B, WRGHT 2,l64-,004

FOUNTAIN STENC IL BRUSH Filed Dec. v2, 19:56

14 n FZ INVENTOR ATTORNEYS Patented June 27, 1939 UNITED STATE.

FOUNTAIN STENCEL BRUSH Milton B. Wright, St. Petersburg, Fla., assignor to Universal Fountain Brush Company, Inc., a corporation of Florida Application December 2, 1936, Serial No. H3303 3 Claims.

The present invention relates to fountain `brushes and more particularly to stencil brushes used for marking packing cases and the like with a stencil.

The primary object of the invention is to pron vide in fountain brushes an improved structure whereby the bristles of the 'brush that are normally set in solid vulcanized rubber are prevented from turning and at the same time permitting an uninterrupted ilow of liquid such as inl; or paint into the bristles.

A further object is to provide a valve stem., connecting the liquid containing handle with the bristles of the brush, which provides forv a better seat for the valve, thus eliminating the necessity of cleaning the valve at frequent intervals.

The invention will be fully and comprehensively understood from a consideration of the following detailed description when read in connection with the accompanying drawing which forms part of the application.

In the drawing:

Fig. l is an elevational View of the brush.

Fig. 2 is an enlarged sectional view taken on line 2-2 of Fig. l; and

Fig. 3 is an exploded perspective view of the several parte connecting the liquid containing handle with the brush head.

The present invention may be considered as an improvement of Patent No. 1,348,681, granted August 3, i920, and includes a` number of elements disclosed in this patent. Generally stated, the device consists of a reservoir handle attached to a brush structure, the bristles of the brush surrounding a substantially square-shaped wedge that is tapered in one end and ilared in an outward direction to prevent said bristles from covering the central outlet from the handle. A reservoir handle is connected to the brush head by means of a threaded valve stern, which stem is attached to the handle thru an intermediate threaded coupling member.

Referring to the drawing for a more detailed description thereof, the device includes a hollow reservoir handle li adapted to contain a liquid such as ink or paint. The open end of the liandle is interiorly threaded at I for attachment to the cap l. The end of the cap projecting within the handle is recessed and in the recessed portion 50 there are provided a plurality of outlets 8 thru which the paint or inl: contained within the liandle 5 is fed to the brush. The lower end of the cap 'I is reduced in thickness and is formed with interior and exterior threads Il! and t, respectively, for a purpose to be hereinafter described.

(ci. is-issi The brush head indicated generally by the numeral lI includes an annular metallic ring `I2 and cap I3, the cap I3 being formed of brass or other similar material. The bristles I4 of them brush are preferably set in vulcanized rubber` and 5 surround a square-shaped centrally disposed wedge i5, the end I6 of which is tapered and dared to prevent the bristles of the brush from covering the central outlet extending from the,A reservoir handle. The wedge I5 is preferably 10 square shaped so as toA prevent its turning when set in solid vulcanized rubber. The upper end of the wedge l5 is provided with a shoulder portion Il on which the circular plate I8 is placed to form a backing for the ends vof the bristles. The plate E53 is held in position by means of the annular ring I2, which ring is clamped into position by any suitable means.

The interior of the wedge I5 is threaded for receiving the threaded end I9 of a valve 'stem 2W?20 which connects the handle 5 with the brush head Ii. The liquid, such as paint or ink, flows vfrom the handle 5 thru theopenings 8 into the passage 2l, thence into the bristles of the brush. It is of course to be understood that a central outlet eX-Lr tends thruout the length of the wedge I5. It will be noted that the stem is exteriorly threaded thruout its length and that the upper end thereof is attached to the cap I and by means thereof the handle 5 is in direct communication with thea' brush head II. 1

The upper end of the stem 2|) is formed withl concave seat 22 for receiving the convexed end 23 of the cap l, the members 22 and 2 3 constituting a closure valve between the reservoir han-t die 5 and the brush. The convexed end 23 is formed within a circular area corresponding to the series of 'outlets 8 whichfare also preferably arranged in a circular manner. The convexed end 23 when seated within the seat 22 closes the 40 outlet from the handle to the brush head I I. A slight turn of the handle withdraws the convexed end 23 from its seat, thereby permitting the liquid to flow thru the outlets 8 into the passage 2I.

For preventing leakage around the tapered end of the cap 'I, there is provided a packing nut 24 and washer 25. The packing nut is threaded for engagement with the exterior threads 9 of the cap 'l and when in position thereon prevents any leakage of the liquid around the stem 2B, the- 50 washer 25 being compressed to closely contact the threads of the stem 2l). At that point on the stern ZU where the thread I9 begins, as indicated at 26, the stem 29 is preferably straight knurled so as to securely grip within a central opening 2'I of the cap I3 into which same is pressed. When in position the stem and cap present a substantially unitary construction while permitting the use of different types of materials for each part. It has heretofore been the practice of forming the stem 20 and cap I3 of a single piece of material and threading and shaping the same to the desired size, which process resulted in an appreciable Waste of material. It will be noted Vthat the cap I3 is also provided with a groove 28 to accommodate the upper end of the annular ring I2, and that a washer 29 is interposed between the cap I3 and the plate I8.

It will be apparent that the brush comprising the bristles I4 secured in a vulcanized setting surrounded by the annular ring I2 and having the wedge I5 firmly embedded within the bristles I4 by the vulcanized material, and. including the plate I8 at its upper end forms a unitary construction presenting a brush element adapted for convenient attachment to the cap I3. The wedge I5 being interiorly threaded is readily engaged on the device by screwing on to the threaded portion I9, the latter projecting from within the -cap I3 in which the washer 29 has Vbeen inserted.

A convolute spring 30 encircles the stem 20 and is interposed between the packing nut 24 and top face of the cap I3. The spring 3u has a normal tendency to exert pressure to compensate -for any inequalities in the threads of the stem 20 which further aids in preventing leakage of the liquid around these threads.

It is believed that the use of the brush and the advantages thereofzarereadily apparent to those skilled in the art. The handle 5 contains a suitable quantity of a liquid such .as paint or ink and when desiring to feed the-liquid to the brush head the handle is rotated approximately one quarter of a turn` relative to the brush head I E or a suiiicientdistance to separate the convexed end `23 from the concave seat ZZ'permitting the liquid liquid. The feature of the convexed and concave ends 22 and 23, respectively, .provides for Va more regulated .flow of the liquid and also ,eliminates thenecessity of cleaning the device at frequent intervals. In devices of the kind using :a flat type of seat, the residue of ink accumulates around the seat thereby slowing or stopping entirely the flow of liquid from the reservoir.

It is to be understood that this improvement is capable of extended application and is not conned to the exact showing of the drawing nor to 4the precise construction described and, therefore,

such changes and modifications may be made therein as do not affect the spirit of the invention nor exceed the scope thereof as expressed in the appended claims.

What is claimed as new is:

l. A fountain brush comprising in combination, a reservoir handle, an interiorly threaded cap forming a closure for said handle, a brush head comprising a cap adapted to receive a brush element therein, a hollow stem mounted on said brush cap and extending into said handle cap and threadedly engaging the interior threads thereof and including a threaded shank extending from within said brush cap, and a brush element comprising a wedge block securely ernbedded therein and having a bore therethrough with interior threads for engagement with said threaded shank, said wedge block being polygonal in cross-section to prevent turning of same within said brush element.

2. A fountain brush comprising in combination, a reservoir handle, a cap forming a removable closure for said handle and including means for dispensing the contents thereof, a hollow Stem extending fromv said cap, a brush head attached to said stem and including an annular ring member, a second cap surrounding said annular ring, a wedge block disposed substantially centrally of said ring and having a passageway communicating with said hollow stem, the upper end of said block being substantially square-shaped in cross section and the other end outwardly flared, and a shoulder portion formed in the squareshaped end of the block and receiving a circular plate, said plate forming a backing strip for bristles mounted within said ring and surrounding said wedge block.

3. A fountain brush comprising in combination, a reservoir handle, a cap forming a removable closure for said handle and including means for dispensing the contents thereof, a hollow stem extending from said cap, a brush head attached to said stem and including an annular ring member, a second cap surrounding said annular ring member, a wedge block disposed substantially centrally of said ring and having a passageway communicating with said hollow stem, the upper end of said block'being substantially square-shaped in cross section and the other end outwardly flared, a shoulder portion forming a part of the square-shaped end of the block, a circular plate positioned on said shoulder portion and held thereon by said annular ring, said plate forming a backing strip for bristles mounted within said ring and surrounding said wedge block.

MILTON B. WRIGHT. 

